Selected MCQ

Current Question
The simple interest on Rs. 49500 for 3 years is Rs. 17820. What is the compound interest on the same sum and time at the same rate?
  • A. Rs. 20043.94
  • B. Rs. 18654.81
  • C. Rs. 20264.46
  • D. Rs. 19612.41
Correct Answer: A
Explanation:
First, find the rate from SI, then apply the CI formula to get Rs. 20043.94.
Related Question 1
There is a 60% increase in a sum in 6 years at simple interest. What will be the compound interest on Rs. 12000 for 3 years at the same rate?
  • A. Rs. 2160
  • B. Rs. 3120
  • C. Rs. 3972
  • D. Rs. 6240
Correct Answer: C
Explanation:
Rate = 10%, CI = 12000[(1.1)³ − 1] = 3972.
Related Question 2
The simple interest on Rs. 12000 for 5 years is Rs. 7200. Find the compound interest for the same period and rate.
  • A. Rs. 3502.80
  • B. Rs. 3052.40
  • C. Rs. 3054.80
  • D. Rs. 3052.80
Correct Answer: D
Explanation:
Rate = 12%, apply the compound interest formula.
Related Question 3
Ratio of simple interest to compound interest for same sum at 8% for 3 years is ____.
  • A. 1875/2029
  • B. 1/2.5
  • C. 1903/2156
  • D. 4/9
Correct Answer: A
Explanation:
Use SI = PRT/100 and the CI formula.
Related Question 4
A sum becomes triple in 3 years at compound interest. In how many years will it become 9 times?
  • A. 18
  • B. 12
  • C. 9
  • D. 6
Correct Answer: D
Explanation:
Growth is exponential → 6 years.
Related Question 5
The simple interest on a sum for 3 years is half the compound interest for 2 years at 10%. Find the sum.
  • A. Rs. 1550
  • B. Rs. 1650
  • C. Rs. 1750
  • D. Rs. 2000
Correct Answer: C
Explanation:
Solve the SI and CI relation.